| Castel Bolognese to Borgosatollo | 110.66 mi (178.09 km) |
| Castel Bolognese to Borgosesia | 197.81 mi (318.34 km) |
| Castel Bolognese to Boscoreale | 280.71 mi (451.76 km) |
| Castel Bolognese to Boscotrecase | 279.29 mi (449.48 km) |
| Castel Bolognese to Botticino Sera | 113.75 mi (183.06 km) |
| Castel Bolognese to Bovalino Marina | 482.54 mi (776.58 km) |
| Castel Bolognese to Boves | 210.05 mi (338.04 km) |
| Castel Bolognese to Boville Ernica | 202.58 mi (326.03 km) |
| Castel Bolognese to Bovisio Masciago | 157.62 mi (253.67 km) |
| Castel Bolognese to Bovolone | 72.30 mi (116.35 km) |
| Castel Bolognese to Bra | 196.40 mi (316.08 km) |
| Castel Bolognese to Bracciano | 154.37 mi (248.43 km) |
| Castel Bolognese to Brandizzo | 203.27 mi (327.14 km) |
| Castel Bolognese to Breganze | 96.25 mi (154.91 km) |
| Castel Bolognese to Brembate | 141.28 mi (227.37 km) |
